Bounced and crashed at 27m/s
Results show that weight is a very small difference that only has a larger say in the landings with smaller landing gear. The small gear withstand 4m/s safely before breaking usually, the medium gear take 12-13m/s safely and the large landing gear can handle 27m/s before bouncing occurs and it becomes rather difficult to test! This is only for Kerbin and I can extrapolate that since gravity affects weight, the weight has a larger say in how fast you can come in before breaking, but it's safe to say that the numbers earlier are what the gear can handle a solid 80%+ of the time.
I know, crude experiment, but hey, it helps!